Tunable Chiral Bound States with Giant Atoms.
Phys Rev Lett
; 126(4): 043602, 2021 Jan 29.
Article
em En
| MEDLINE
| ID: mdl-33576670
ABSTRACT
We propose tunable chiral bound states in a system composed of superconducting giant atoms and a Josephson photonic-crystal waveguide (PCW), with no analog in other quantum setups. The chiral bound states arise due to interference in the nonlocal coupling of a giant atom to multiple points of the waveguide. The chirality can be tuned by changing either the atom-waveguide coupling or the external bias of the PCW. Furthermore, the chiral bound states can induce directional dipole-dipole interactions between multiple giant atoms coupling to the same waveguide. Our proposal is ready to be implemented in experiments with superconducting circuits, where it can be used as a tunable toolbox to realize topological phase transitions and quantum simulations.
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MEDLINE
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En
Ano de publicação:
2021
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Article